Error reported in jpcap experiment java.lang.NoSuchMethodError: setPacketValue, getPacket always gets null result

In the Jpcap experiment, the running program always reported an error, the information is as follows: Error statement: jpcap = JpcapCaptor.openDevice(devices[0],caplen, promiscCheck,20); The result of getPacket() function execution has not been null, and no answer has been found on the Internet Finally, we found that it w ...

Posted by homerjay on Mon, 11 Nov 2019 15:02:33 -0800

LNMP Deployment and Application Theory and Practice

LNMP Deployment and Application Interpretation of LNMP Architecture The LNMP platform is a combination of Linux, Ngnix, MySQL and PHP.Architecture, requires Linux server, MySQL database, PHP parsing environment MySQL Installation Configuration For consistency with Nginx, PHP environments, here is the option to install MySQL components as sourc ...

Posted by hyzdufan on Mon, 11 Nov 2019 14:48:38 -0800

Some key analysis tools of MySQL

Catalog pstack gdb strace perf pstack Get stack informationProblem thread positioningLow load mysql_pid=4522 pstack $mysql_pid>pstack.info PT PMP sorting stack information pt-pmp pstack.info | less You can also directly execute Pt PMP pt-pmp --pid 4522 as 10 __io_getevents_0_4(li ...

Posted by fatmart on Mon, 11 Nov 2019 15:09:47 -0800

Using vue+node+koa+sequlize to realize the background management system

mkdir AceNode && cd AceNode vi package.json Add the following to package.json { "name": "ace-node", "version": "1.0.0", "description": "backend for ace", "main": "./src/app.js", "scripts": { "start": "nodemon node ./src/app.js", "build": "babel ./src/app.js -d dist" }, "keywords": [ "koa", "async" ], ...

Posted by phorcon3 on Mon, 11 Nov 2019 14:28:22 -0800

Alicloud CentOs7 installation Gitlab is available for pro test

Install GitLab Installation steps of official website: https://about.gitlab.com/install/#centos-7 Configuration before installation, firewall and so on Mail configuration Landing gitlab Install Gitlab Open http and ssh access of firewall sudo yum install -y curl policycoreutils-python openssh-server sudo systemctl enable sshd sudo systemctl ...

Posted by TPerez on Mon, 11 Nov 2019 13:52:19 -0800